Dave Embedded Systems Axel ULite, Руководство по оборудованию

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AXEL ULite Hardware Manual v.1.0.2
7 Power, reset and control
AXEL ULite system-on-module (SOM for short) is powered by carrier
board via
VIN_SOM
rail.
About voltage range, three supported configurations are available. These
configurations are indicated by the value of the
f field of the ordering
code. The generic ordering code is in the form:
DA p l r n c f t s
The field f can assume the following values:
● 0,1: power supply voltage range 3.135 - 3.465V (that is
3V3±5%)
● 2: power supply voltage range is 3.3 - 4.5V
● please note that this range can be widened by the use of an
external MOSFET; for more details please refer to
technical
support
● 3: power supply voltage range is 3.25 - 3.465V (that us 3.3
+5%/-1.5%).
Voltage references for single-ended I/O signals the same for all
configurations. They are detailed in the following table.
Signal groups Voltage
reference SODIMM pin number Nominal
voltage
UART1-UART5
CSI
LCD
NAND
SD1
JTAG
GPIO1
ENET1-ENET2
3V3_IO 155 3.3
SNVS_TAMPER[9:
0]
VDD_SNVS_
IN
143 3.0
What is interfaced to 3.3V signals at carrier board level may be
referenced to a different voltage than 3.3V_IO. However, the difference
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